Ileocecal valve reconstruction during continent urinary diversion

Area of Science:

• Gastroenterology
• Surgical Innovation
• Reconstructive Surgery

Background:

• Ileocecal valve loss during pouch construction (e.g., Mainz, Indiana) shortens transit time, causing malabsorption and diarrhea.
• Patients with prior bowel resection or myelomeningocele are particularly vulnerable to these complications.
• Existing procedures necessitate the loss of the ileocecal valve, impacting intestinal function.

Purpose of the Study:

• To functionally reconstruct the ileocecal valve after its removal during ileocecal reservoir creation.
• To evaluate the efficacy of a novel submucosal tunnel technique for ileocecal valve reconstruction.
• To assess the impact of the reconstructed valve on intestinal transit time and patient symptoms.

Main Methods:

• Functional reconstruction of the ileocecal valve by embedding ileum into the ascending colon via a submucosal tunnel.
• Utilizing an appendiceal technique analogous to Mainz pouch continent mechanisms.
• Experimental validation in 15 dogs and initial clinical trials in 12 patients.

Main Results:

• The reconstructed valve effectively mimicked the physiological function of the native ileocecal valve in canine models.
• A significant prolongation of intestinal transit time was observed without signs of obstruction.
• Initial human trials showed promising functional and morphological results, with the reconstructed valve resembling the genuine ileocecal valve on imaging.

Conclusions:

• The submucosal tunnel technique offers a viable method for functional ileocecal valve reconstruction.
• This surgical approach can mitigate malabsorption and diarrhea associated with ileocecal pouch procedures.
• The technique shows promise for improving functional outcomes and quality of life in patients undergoing reservoir surgery.